Lumos - Write

A Smooth Refillable Writing Pen. Compatible with 11 interchangeable tips.

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Disposable pens aren't the future...


That's why I designed the Lumos - Refillable Writing Pen. This pen is built to last and provide as much utility as possible. Here are some of its features:

  • Infinitely refillable: The Lumos writing pen has a reservoir that can be easily refilled just by dipping it in ink. It works by capillary action, which feeds the pen tip and keeps the ink flowing beautifully.

  • Any ink colour: You're no longer limited to just blue and black. You can refill your pen with any fountain ink colour, including waterproof pigment ink.

  • Smooth tips: The Lumos writing pen comes with an incredible Japanese-made 0.3 writing tip that provides just the right level of feedback on paper. You can write at any angle, and the tip is incredibly durable, so no matter how hard you press on the paper, it will take it. When the tip does eventually wear out, all that needs replacing is this tiny tip. A 0.5 tip is also available if you like a thicker line.

  • Endlessly interchangeable: The Lumos Refillable writing pen doesn't limit you to just one tip type. You can easily swap between another 9 different tip styles, including fineliners (0.1, 0.2, 0.3, 0.5, 0.8, 1.0) and felt-tips (2mm chisel, bullet, and brush). You can find the full creative tip set here.

Included in the box:

  • The Lumos Pro Single in grippy matte black
  • The Lumos 0.3 writing tip (replacement or other Lumos tips here)
  • 3ml Deep Black Ink sample
  • Ink Reservoir x1


  • Lumos Pro Single
  • Length capped – 155mm
  • Length uncapped – 145mm
  • Pen barrel diameter – 10mm
  • Weight – 20g

Full FAQs and a video guide to getting started with your Lumos can be found here.

What ink can I use?

The Lumos is compatible with all but the most experimental fountain pen inks (think shimmer + iridescent). We offer a beautiful range of pigment ink for fountain pens, which are perfect for the Lumos and can be found here.

Note: Calligraphy Ink has an acrylic binder which will block the pen and is not suitable for use with The Lumos.

We aim to process your order within 1-3 working days. Please note that this increases to 1-4 working days for orders that include any personalisation, such as engraving.

Shipping costs

Shipping costs are calculated at checkout.

Delivery times

  • UK: 1-2 business days
  • Europe: 3-5 business days
  • USA: 5-7 business days
  • Rest of world: 8-10 business days (duties may apply on delivery)

Please refer to our Delivery page for more information, and reach out to us at if you have any further questions.

Buy it with


Also available in mini

Customer Reviews

Based on 48 reviews
Fantastic pen!

I bought this pen recently, and it's fabulous! Beautifully made, easy to fill (why has no-one else thought of this type of mechanism in a fine liner before?!), and writes very nicely. Great idea to have a refillable, quality pen, which uses real ink, instead of disposable pens, or pens with plastic refills. By the way, the packaging is very nicely done too.

I'm very happy to have found an English company, making quality goods, that I can support. I'll definitely be a returning customer.


I am enjoying this pen so much! The reservoir is huge. I've only tried it with the original fineliner tip it came with, but look forward to trying others. It has a nice heft to it and a little texture which means it isn't slippy. The only slight weirdness is the back end which feels a little unfinished if the cap isn't on it during writing. But really happy with how it looks, feels, and writes, and excited to keep experimenting.


Somehow in my excitement of becoming a lumos user I accidentally ordered black instead of Ivy but I’m not mad over it, it will be an excuse to expand my collection of sustainable writing from Tom’s Studio!!!

Love This, but Wish There Was a Smaller Writing Tip

The quality of this pen is amazing. It's sturdy, has a nice weight, easy to use, and beautiful to look at. My only issue are the tips. I like to write with a Japanese 0.38, and I thought the 0.3 writing tip would be perfect, but it writes way too thick. It's definitely much thicker than my Pilot Juice Up 0.3 gel ink pen. I was very disappointed and almost gave up finding a refillable pen I liked, until I tried the 0.1 fineliner nib (I also bought the duo tip Lumos Brass which came with all the nibs). That writes much closer to a 0.4 gel ink pen!! I actually bought three replacement nibs already because I don't know how they'll stand up to daily use, haha. I really hope you guys can make a 0.1 writing tip soon!! Wishing you all the best!!!

Irene D.
Lumos Write

Love it. So easy to use and a pleasure to write with.